Toyota has kept the basic Avalon recipe but changed a few ingredients.
Toyota took its aluminum 3.0-liter V-6 engine and added variable valve timing to boost horsepower, torque and fuel economy. Although similar in design to the Lexus ES 300 powerplant, the Avalon engine has its own software tuning and timing, and a new catalyst, exhaust system and torque converter.
Toyota increased the stiffness of the body, suspension and chassis. It also changed the rear suspension links, increased the diameter of the rear stabilizer bar and selected tires with better grip. The interior and exterior were redesigned.